262 THAXTER. 



sinuous, often elongate, two or three to ten, two to four or more of 

 the terminal cells often rather abruptly somewhat smaller, and form- 

 ing a more or less characteristic termination; the cells eighteen, more 

 or less, in number, many of them abruptly somewhat broader distally 

 than the base of the cell next in order. Perithecia one or two to eight, 

 more or less; the stalk-portion well developed, elongate, but not 

 usually clearly distinguished from the ascigerous portion, which 

 becomes rather deep red-brown; the stalk yellowish, or tinged with 

 pale brown; the whole straight and rigid, or slightly sigmoid, tapering 

 distally to the undifferentiated tip, and rather bluntly pointed apex. 

 Perithecia, largest 300 X 25 fx, the ascigerous portion about 140 /x, 

 but varying to much smaller dimensions. Receptacle about 60-80 X 

 15-20^1. Primary appendage 125-170 X 12 /x: longer secondary 

 appendages 300-425 /x, more or less. 



On the elytra of Gonocnemis sp. Nos. 2356 and 2633, Kamerun, 

 W. Africa. 



This species is most nearly allied to D. viacidatus from which it 

 differs in its immaculate appendages, short perithecia and quite differ- 

 ent receptacle. The male is also at once distinguished by its com- 

 paratively short appendage and long-stalked antheridia. 



Dimeromyces maculatus nov. sp. 



Male wdividval pale yellowish, becoming tinged with brownish. 

 Receptacle rather stout, clavate or brush-shaped, consisting of from 

 five to ten cells greatly flattened and very oblique; the basal larger 

 and usually abruptly bent. Primary appendage erect, rather elongate, 

 tapering; the basal cell larger, the subbasal dark red-brown and 

 distinguished by dark septa and constrictions; the third somewhat 

 smaller, often dark and slightly inflated; the rest of the appendage 

 pale, tapering, its lower cells sometimes darker and slightly inflated. 

 Antheridia one or two to se^'en, sometimes associated with one, or 

 rarely two, secondary appendages similar to the primary, but longer 

 and stouter, with longer basal cells. Antheridia nearly sessile, the 

 regions clearly distinguished; nearly straight, the neck long and 

 slender, its base and tip hyaline, the rest brown, as is the clearly 

 distinguished efferent region below it. Receptacle 50-65 X 20-25 fi. 

 Appendages, primary, 115-150 /x; secondary, longer, 190 /x- An- 

 theridia slightly divergent, average, 48 X 9 /x- 



Female indiridual showing extreme variations in size and develop- 



